Reduce scheduler polling noise

server/internal/scheduler/scheduler_run_retention_worker_test.go

@@ -0,0 +1,53 @@
+package scheduler
+
+import (
+	"strings"
+	"testing"
+	"time"
+)
+
+func TestSchedulerRunRetentionCutoffKeepsFifteenDays(t *testing.T) {
+	now := time.Date(2026, 5, 20, 22, 0, 0, 0, time.FixedZone("UTC+8", 8*60*60))
+
+	got := schedulerRunRetentionCutoff(now, defaultSchedulerRunRetentionDays)
+	want := time.Date(2026, 5, 6, 0, 0, 0, 0, time.FixedZone("UTC+8", 8*60*60)).UTC()
+	if !got.Equal(want) {
+		t.Fatalf("cutoff = %s, want %s", got.Format(time.RFC3339), want.Format(time.RFC3339))
+	}
+}
+
+func TestSchedulerRunRetentionCutoffHasHardFloor(t *testing.T) {
+	now := time.Date(2026, 5, 20, 22, 0, 0, 0, time.FixedZone("UTC+8", 8*60*60))
+
+	got := schedulerRunRetentionCutoff(now, 7)
+	want := schedulerRunRetentionCutoff(now, defaultSchedulerRunRetentionDays)
+	if !got.Equal(want) {
+		t.Fatalf("cutoff = %s, want hard floor cutoff %s", got.Format(time.RFC3339), want.Format(time.RFC3339))
+	}
+}
+
+func TestSchedulerRunRetentionSQLIsBoundedAndFKSafe(t *testing.T) {
+	triggerDeleteSQL := schedulerRunRetentionTriggerDeleteSQL()
+	for _, want := range []string{
+		"status IN ('success', 'failed', 'skipped')",
+		"LIMIT $2",
+		"FOR UPDATE SKIP LOCKED",
+		"DELETE FROM ops.scheduler_job_triggers target",
+	} {
+		if !strings.Contains(triggerDeleteSQL, want) {
+			t.Fatalf("trigger retention SQL missing %q in SQL:\n%s", want, triggerDeleteSQL)
+		}
+	}
+
+	runDeleteSQL := schedulerRunRetentionRunDeleteSQL()
+	for _, want := range []string{
+		"NOT EXISTS (SELECT 1 FROM ops.scheduler_job_triggers t WHERE t.run_id = r.id)",
+		"LIMIT $2",
+		"FOR UPDATE SKIP LOCKED",
+		"DELETE FROM ops.scheduler_job_runs target",
+	} {
+		if !strings.Contains(runDeleteSQL, want) {
+			t.Fatalf("run retention SQL missing %q in SQL:\n%s", want, runDeleteSQL)
+		}
+	}
+}